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Temperature Dependent Microbial Community Dynamics Modulates Methane Cycle in Permafrost-affected Soils

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dc.contributor.authorMyeong, Nu Ri-
dc.contributor.authorKim, Mincheol-
dc.date.accessioned2021-07-26T00:43:59Z-
dc.date.available2021-07-26T00:43:59Z-
dc.date.issued2019-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/12321-
dc.description.abstractTemperature Dependent Microbial Community Dynamics Modulates Methane Cycle in Permafrost-affected Soils. Thawing permafrost promotes microbial degradation of carbon sink leading to the biogenic production of greenhouse gases such as carbon dioxide and methane. This study aims to understand how methane cycle is modulated by microbial community changes driven by different temperatures and incubation times under anaerobic condition in permafrost-affect soils. Alaska Council soil cores were incubated at 5℃, 15℃ and 25℃ with 13C-labelled substrates for 11 months under anaerobic condition. Soil DNA was extracted and then 16S rRNA gene targeting bacteria and archaea was sequenced. There are distinct patterns in bacterial and archaeal community composition between active layer and permafrost. In permafrost three methanogenic genera responded distinctively to different temperature and incubation time settings. There is a clear shift in major methanogen lineage from low to higher temperatures. ‘Ca Methanoflorens’ was replaced by Methanosarcina at 15℃ and 25℃, suggesting the modulation in methane production at different temperatures occurs by turnover among major methanogen lineages differing in their temperature specificity. These results help to understand the effect of different temperatures and incubation times on metabolic interactions between anaerobic microbes in a moist acidic Arctic tundra. [This research was supported by a National Research Foundation of Korea Grant from the Korean Government (NRF-2016M1A5A1901769).]en_US
dc.languageEnglishen_US
dc.language.isoenen_US
dc.titleTemperature Dependent Microbial Community Dynamics Modulates Methane Cycle in Permafrost-affected Soilsen_US
dc.title.alternative온도변화에 따른 북극 동토내 메탄연관 미생물 군집구조 변화en_US
dc.typePosteren_US
dc.identifier.bibliographicCitationMyeong, Nu Ri, Kim, Mincheol. 2019. Temperature Dependent Microbial Community Dynamics Modulates Methane Cycle in Permafrost-affected Soils. MSK's 60th Anniversary International Symposium on Microbiology 2019. international convention center jeju(Jungmun Sightseeing Complex, Seogwipo, Jeju). 2019.04.17~2019.04.19.-
dc.citation.conferenceDate2019.04.17~2019.04.19en_US
dc.citation.conferenceNameMSK's 60th Anniversary International Symposium on Microbiology 2019en_US
dc.citation.conferencePlaceinternational convention center jeju(Jungmun Sightseeing Complex, Seogwipo, Jeju)en_US
dc.description.articleClassification포스터-
dc.subject.keywordPermafrost-affected Soilsen_US
dc.subject.keywordMethaneen_US
dc.subject.keywordmicrobesen_US
dc.identifier.localId2019-0063-
Appears in Collections  
2019-2019, Arctic permafrost environment change monitoring and prediction method developments (19-19) / Lee, Bang Yong (PN19081)
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